NTSC is fine if you're in a country that uses it. Otherwise converting between standards is expensive (so I'm told), and you still lose some quality. Pay money out for more modern kit and you can do anything you can with a toaster. Plus the fact you can use any common or garden PC or Mac to do it, rather than relying on old, expensive and hard to come by Amigas.
The Toaster has had it's day, along with the Amiga as a serious, professional workstation. No offence to those who still use it for small scale stuff, but it's not top of the heap any more.